Patent GB-1288780-A (GB)
IPC: A47K10/28
Filed: 1969-10-27
Abstract: 1288780 Roll towel dispensers STEINER CO LAUSANNE S A 27 Oct 1969 52618/69 Heading A4G A roll towel dispenser has a clean towel dispenser and a used towel take-up mechanism so arranged that, prior to use, the towel is held taut across the bottom of the dispenser and, in use, the user pulls out a predetermined length of clean towel into a loop and actuates a time delay mechanism so that the take up mechanism does not operate to retract the used loop to its taut condition until sufficient time has elapsed for the loop to be used, the two mechanisms being so inter-connected that the loop is of a predetermined size and the take up mechanism always tends to take up more towel than is dispensed to ensure the tautness prior to use. Mechanisms are provided to ensure that the user can only pull out clean and not used towelling into the loop and to prevent more than one dispensing operation occuring until the take up mechanism has operated. The dispenser is of similar construction to that of Specification 1143948, the roll 51 of clean towelling Fig.11, having its end led over a dispensing roll 181, around a roll 235 and member 125, across the bottom of the dispenser around a roll 135 movable in slots 137, around rolls 160, 165 mounted on pivotal arms 155 and thence to the soiled towel roll 59 which is mounted on a roller 210 and is urged against a take up roller 191 which rotates at the same speed as the dispensing roll 181 but has a larger diameter so that it takes up more towelling than is dispensed. In use a reach 52 of the towel is pulled downwards rotating the dispensing roller 181 a given number of turns. The rotation of the roller 181 is controlled by a mechanism silimar to that of Specification 1143949 and has a time delay mechanism 270, 271 similar to that Specification. As the new towel is pulled downwardly into a loop a small portion of soiled towelling is pulled from the back of the dispenser raising the rollers 160, 165 of the pivoted arms 155. Simultaneously, as the dispensing roller 181 rotates it rotates the take up roller 191 causing the used towel roll 59 to take up towelling faster than it is dispensed. When the rollers 160, 165 reach the top of their movement, Fig.12, the roller 165 pivots a shield 301 to place it between the take up roller 191 and the soiled towel roll 59 to prevent further take up although the roll 181 continues to dispense to provide the loop 50 of predetermined length. The time delay mechanism 270, 271 then operates and, after a predetermined time, operates a link-lever-cam mechanism Fig.20 (not shown) to allow the arms 155 and rollers 160, 165 to fall and to withdraw the loop into the casing to return the mechanism into the original Fig.11 condition. The mechanism of Fig.20 (not shown) prevents rotation of the roll 135, Fig.11, in the reverse direction (apart from the initial withdrawing) to stop used towelling being pulled from the soiled towel roll 59. The shield 301, which stops take up, may be replaced by a onerotation clutch mechanism that is disconnected to stop take up, by the raising of the roller 165. The dispensing roller 181 has a mechanism similar to that of Specification 1143949, to prevent its rotation for a further dispensing operation until the arms 151 have been lowered to retract the soiled towelling. The casing has loading and unloading features similar to those of Specification 1143948.